Effects of Synthesis Methods on the Microstructure and Properties of Perovskite-Type SrFeCoO3-δ Oxides

Abstract

The microstructure and properties of the perovskite-type SrFeCoO3-δ (SFC) oxides synthesized by different methods were analyzed in detail in the paper. The oxide powders were synthesized by the citrate method (CM) and solid state reaction (SSR). X-ray diffraction (XRD) results reveal that the main crystal structure of the SFC powders is cubic structure SrFe0.5Co0.5O3. Scanning electron microscopy (SEM) observation shows that the two kinds of powders have different grain morphologies and microstructure. Thermal gravimetric analysis and differential scanning calorimeters (TGA/DSC) results indicate that the composition loss and phase transition of the powders are related to the synthesis methods. The SFC powders synthesized by CM method show a more weight loss of various compositions than that synthesized by SSR method.